|Rank|Nation|Gold|Silver|Bronze|Total|
|---|---|---|---|---|---|
|1|Russia|8|12|10|30|
|2|China|7|4|2|13|
|3|Ukraine|7|1|1|9|
|4|Poland|3|4|2|9|
|5|Belarus|2|2|2|6|
|6|Germany|2|1|2|5|
|6|South Africa|2|1|2|5|
|7|Australia|2|1|1|4|
|8|Japan|2|0|1|3|
|9|France|1|3|0|4|
|10|Romania|1|2|2|5|
|11|Hungary|1|2|1|4|
|12|Great Britain|1|1|2|4|
|12|Spain|1|1|2|4|
|14|Morocco|1|1|1|3|
|15|Brazil|1|0|3|3|
|16|Czech Republic|1|0|2|3|
|17|Moldova|1|0|0|1|
|18|Finland|0|2|1|3|
|19|Estonia|0|1|1|2|
|19|North Korea|0|1|1|2|
|19|South Korea|0|1|1|2|
|22|Denmark|0|1|0|1|
|22|Ireland|0|1|0|1|
|22|Jamaica|0|1|0|1|
|22|Kazakhstan|0|1|0|1|
|22|Uganda|0|1|0|1|
|27|Croatia|0|0|2|2|
|28|Canada|0|0|1|1|
|28|Cyprus|0|0|1|1|
|28|Italy|0|0|1|1|
|28|Switzerland|0|0|1|1|

Question: how many nations won at least 10 silver medals?
Answer: 1